Vulnerability Description
A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.15 |
| Netapp | Active Iq Unified Manager | - |
| Netapp | E-Series Santricity Os Controller | >= 11.0.0, <= 11.70.2 |
| Netapp | Element Software | - |
| Netapp | Hci Management Node | - |
| Netapp | Solidfire | - |
| Netapp | Bootstrap Os | - |
| Netapp | Hci Compute Node | - |
| Netapp | A700S Firmware | - |
| Netapp | A700S | - |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
| Netapp | H410S Firmware | - |
| Netapp | H410S | - |
| Netapp | H410C Firmware | - |
| Netapp | H410C | - |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-ExploitIssue TrackingPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=2036934Issue TrackingPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306ePatchVendor Advisory
- https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com
- https://security.netapp.com/advisory/ntap-20221111-0003/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatchThird Party Advisory
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-ExploitIssue TrackingPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=2036934Issue TrackingPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306ePatchVendor Advisory
- https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com
- https://security.netapp.com/advisory/ntap-20221111-0003/Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlPatchThird Party Advisory
FAQ
What is CVE-2021-4203?
CVE-2021-4203 is a vulnerability with a CVSS score of 6.8 (MEDIUM). A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with...
How severe is CVE-2021-4203?
CVE-2021-4203 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-4203?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Netapp Active Iq Unified Manager, Netapp E-Series Santricity Os Controller, Netapp Element Software, Netapp Hci Management Node.